Process of satinizing cotton fabrics.



No Drawing.

' The process can be carried out UNITED STATES PATENT OFFICE.

HERMAITN DUTSCHIliE, OF ELBERFELD, GERMIAN'Y.

PROCESS OF SATINIZI NG COTTON FABRICS.

To all whom it may concern Be it known that I, HERMANN DUTSCHKE, a subject of the German Emperor, residing at Elberfeld, in the Empire of Germany, have invented a new and useful Process of Satinizing Cotton Fabrics, of which the following is a specification.

before or after mercerizing, preferably after dyeing.

It consists in impregnating the goods, after the dyeing process, either in the dry or wet condition, with a salt-solution of sodium-chlorid or chlorid of ammonium, after which the goods are passed repeatedly through a calender heated to about 100 to 200 degrees centigrade. The surface gloss from the steam is then obliterated from the goods in an ordinary manner and the appearance of the goods may be rendered more refined by Working it through fluted rollers. The goods thus treated can be placed in water for days without materially losing its gloss. Qther crystallizable salts and organic acids may be employed for the aforesaid purpose providing they have no injurious action on the fabric.

Specification of Letters Patent.

Patented Mar. 16, 1%).15.

/ Application filed February 10, 1914. Serial No. 817,943.

the cotton fibers and thereby form reflecting surfaces. With further hot calendering the said crystals become destroyed and thereby produce a further alteration in the fiber surface covering and the resulting silkygloss is rendered permanent even if the fabric is put in water or even hot water.

Salts such as sodium-sulfate, chlorid of potassium, sodium-acetate and so forth may be used for this process. Instead of salts any crystallizable substance may be used, for example organic acids or acid salts, naturally those salts only which under the great heat will not injuriously afiect the vegetable fiber. For example bi-sulfate of sodium is not to be used because of becoming minutely crystallized, while substances which produce oxidation are unsuitable owing to the formation of oxy-cellulose.

I claimi A process for imparting a silk-like gloss to fabrics and other vegetal fibers, which consists in impregnating the fabric with a salt-solution of a crystallizable salt which will not act injuriously on the fibers and then repeatedly passing the fabric through a calender'heated from about 100 to 200 degrees centigrade.

HERMANN DUTSCHKE. [L. s.]

Witnesses:

' ALBERT KEEFER, ROBERT'ERN. 

